Mcgregor Water Dept, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 9.01 ppb (monitoring period 2024-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Mcgregor Water Dept
Mcgregor Water Dept serves about 747 people through 416 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Clayton County, Iowa. EPA system ID: IA2258012; phone on file: 563-873-2258. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 3.71 ppb from 5.3 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Mcgregor Water Dept is 9.01 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 9.01 ppb |
| 2023 | 5.3 ppb |
| 2020 | 4.7 ppb |
| 2017 | 8 ppb |
How Mcgregor Water Dept compares
Of the 1,066 Iowa systems with a lead result, the median latest reading is 1.4 ppb; 4 are over 15 ppb right now and 36 have gone over at some point. Mcgregor Water Dept's 9.01 ppb sits at the 96th percentile in Iowa and the 97th nationally (higher means more lead).
Other water systems in Clayton County
15 other systems share Clayton County; 1 of them has a higher latest lead result than Mcgregor Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Guttenberg Water Utility | 1,817 | 1.6 ppb |
| Monona Municipal Water Dept | 1,471 | 3.5 ppb |
| Elkader Muni Water Dept | 1,219 | 5.4 ppb |
| Strawberry Point Water Supply | 1,155 | 2 ppb |
| Edgewood Water Supply | 939 | 3.7 ppb |
| Garnavillo Water Supply | 763 | 2.4 ppb |
| Marquette Water Supply | 429 | 7.4 ppb |
| Luana Water Works | 301 | 0 (not detected) |
| Farmersburg Waterworks | 276 | 1.2 ppb |
| Volga Water Supply | 203 | 1 ppb |
Next steps for Mcgregor, IA
Test your own tap with a certified lab first-draw sample; Mcgregor, IA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Mcgregor Water Dept whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.